Reduce the amount of time it takes the SuiteCRM target to run

[jonathanmaw]

It currently takes a long time to run TargetSuiteCRM when there are circa 100 users.
Part of this is that to fetch all the information about users, we need to:

• Fetch all the User entries
• Fetch all of each user's related E-mail addresses
• Fetch all of each user's security groups

This must all be done at least once, but we don't necessarily have to do it all multiple times.
We also often have to re-fetch users, security groups and E-mail addresses after we've added them, since we need to address them by their ID.

• Is it possible to retrieve the ID of a newly-created user?
  • I think so. The response data from a Create request might include the ID in the response. This might be sufficient to give us all the necessary information.
• Do we need to fetch all the information about every user so often?
  • It's possible we can only re-fetch information about users we know have changed.

[thinkl33t]

bumping up the api_page_size to 500 has helped a lot with this on the test CRM.

Not sure how ridiculous this is going to get when running against a real CRM though where there are tens of thousands of email addresses